Angle Relationships

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet. They are always the same distance apart.

Front

What is the Transversal Line?

Back

A transversal line is a line that crosses at least two other lines. It creates angles with those lines.

Front

What are corresponding angles?

Back

Corresponding angles are angles that are in the same position at each intersection where a transversal crosses two lines.

Front

What are alternate interior angles?

Back

Alternate interior angles are angles that are on opposite sides of the transversal and inside the two lines.

Front

What are alternate exterior angles?

Back

Alternate exterior angles are angles that are on opposite sides of the transversal and outside the two lines.

Front

What is the relationship between corresponding angles when two lines are parallel?

Back

When two lines are parallel, corresponding angles are equal.

Front

What is the relationship between alternate interior angles when two lines are parallel?

Back

When two lines are parallel, alternate interior angles are equal.

Front

What is the relationship between alternate exterior angles when two lines are parallel?

Back

When two lines are parallel, alternate exterior angles are equal.

Front

If two angles are supplementary, what is their sum?

Back

The sum of two supplementary angles is 180 degrees.

Front

If two angles are complementary, what is their sum?

Back

The sum of two complementary angles is 90 degrees.